// This function handles the rate change request from the driver.
// If the rate mode has changed it will create a new DAL.
static HRESULT myAppChangeSR(DICE_DRIVER_CB_DATA * pData)
{
HRESULT hResult = NO_ERROR;
uint32 notify = 0;
DAL_RATE_MODE_ENUM driverRateMode;
driverRateMode = dalRateByID(pData->rate)->rateMode;
if (driverRateMode != lastDriverRatemode)
{
//Driver asked for a change of rate mode
lastDriverRatemode = driverRateMode;
myAppCreateDAL(driverRateMode);
// Send the RX and TX Configuration Notification as this might
// have resulted in a change of the Rx and Tx streams going
// to the computer. This will for example happen if the device
// has ADAT, when going from 48k to 96k ADAT will be reduced
// to 4 channels (SMUXII)
notify |= DD_NOTIFY_RX_CFG_CHG_BIT | DD_NOTIFY_TX_CFG_CHG_BIT;
}
//Change the Clock as instructed by driver, this could be a change
//in clock source, nominal rate or both.
dalSetClockSource (eDAL_INTERFACE_1, pData->source, pData->rate);
//Send the Clock Setting Accept Notification, this should always be send
notify |= DD_NOTIFY_CLOCK_ACP;
diceDriverNotifyHost(notify);
return hResult;
}
static HRESULT myAppChangeSR(DICE_DRIVER_CB_DATA * pData)
{
HRESULT hResult = NO_ERROR;
uint32 notify = 0;
if (dalRateByID (pData->rate)->rateMode != lastDriverRateMode)
{
lastDriverRateMode = dalRateByID (pData->rate)->rateMode;
dalCreateInterface(eDAL_INTERFACE_1, lastDriverRateMode, INPUT_DEVICES,OUTPUT_DEVICES);
eapDriverChangeRateMode (lastDriverRateMode);
dalStartInterface(eDAL_INTERFACE_1);
//Send the RX and TX Configuration Notification
notify |= DD_NOTIFY_RX_CFG_CHG_BIT | DD_NOTIFY_TX_CFG_CHG_BIT;
}
//Change the Clock Now
dalSetClockSource (eDAL_INTERFACE_1, pData->source, pData->rate);
//Send the Clock Setting Accept Notification
notify |= DD_NOTIFY_CLOCK_ACP;
diceDriverNotifyHost(notify);
return hResult;
}
void StandAloneInitialize (void)
{
//we need to figure out what dal to create
EAP_STND_ALONE_CFG const * pStdaCfg;
DAL_RATE_MODE_ENUM rate_mode = eDAL_RATE_MODE_LOW_MID;
DAL_NOMINAL_RATE_ENUM rate = eDAL_NOMINAL_RATE_ANY;
DAL_CLOCK_SOURCE_ENUM clksrc;
pStdaCfg = eapGetStandaloneCfg();
clksrc = CLOCK_SOURCE[pStdaCfg->clkSrc];
if (clksrc == eDAL_CLK_SRC_AESRX0)
{
rate_mode = eDAL_RATE_MODE_ALL; //auto lock to 32k-192k
}
else if (clksrc == eDAL_CLK_SRC_ADATRX)
{
if (pStdaCfg->extADAT == 0) //Normal
rate_mode = eDAL_RATE_MODE_LOW;
else if (pStdaCfg->extADAT == 1) //SMUX II
rate_mode = eDAL_RATE_MODE_MID;
else if (pStdaCfg->extADAT == 2) //SMUX IV
rate_mode = eDAL_RATE_MODE_HIGH;
else //Auto
rate_mode = eDAL_RATE_MODE_LOW_MID;
}
else if (clksrc == eDAL_CLK_SRC_INTERNAL)
{
rate_mode = dalRateByID (pStdaCfg->extInt)->rateMode;
rate = pStdaCfg->extInt;
}
else
{
//illegal, do something
rate = eDAL_NOMINAL_RATE_48;
}
dalCreateInterface(eDAL_INTERFACE_1, rate_mode, STDA_INPUT_DEVICES,STDA_OUTPUT_DEVICES);
dalSetClockSource (eDAL_INTERFACE_1, clksrc, rate);
dalStartInterface(eDAL_INTERFACE_1);
//update the routing now according to the currently locked rate mode, in auto modes this might change
//so in that case this function must be called.
//updateStdaRouting(); Happens later
}